JP2008249056A - Check valve - Google Patents

Check valve Download PDF

Info

Publication number
JP2008249056A
JP2008249056A JP2007092533A JP2007092533A JP2008249056A JP 2008249056 A JP2008249056 A JP 2008249056A JP 2007092533 A JP2007092533 A JP 2007092533A JP 2007092533 A JP2007092533 A JP 2007092533A JP 2008249056 A JP2008249056 A JP 2008249056A
Authority
JP
Japan
Prior art keywords
valve
flap
box
valve shaft
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2007092533A
Other languages
Japanese (ja)
Other versions
JP4833133B2 (en
Inventor
Hideaki Yumoto
秀昭 湯本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TLV Co Ltd
Original Assignee
TLV Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TLV Co Ltd filed Critical TLV Co Ltd
Priority to JP2007092533A priority Critical patent/JP4833133B2/en
Publication of JP2008249056A publication Critical patent/JP2008249056A/en
Application granted granted Critical
Publication of JP4833133B2 publication Critical patent/JP4833133B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a check valve wherein a distance from the axis of a valve shaft to the valve face of a flap-shaped valve element corresponds to a distance from the axis of the valve shaft to the valve seat face of the downstream opening of a valve box. <P>SOLUTION: On the upper part on the downstream side of the valve box 1, the horizontal valve shaft 11 is supported perpendicular to the flowing direction fluid Q. An upper end 13 of the disc flap-shaped valve element 12 is rockingly mounted on the valve shaft 11. On the valve shaft 11, a valve shaft fixing member 16 is mounted which is pushed down together with the flap-shaped valve element 12 mounted on the valve shaft 11 and then pressed into the valve box 1. A distance from the center axis 19 of the valve shaft 11 to the push-down face 20 of the flap-shaped valve element 12 is the same as a distance therefrom to a push-down face 21 of the valve shaft fixing member 16. A pressed-in front end face 22 of the valve box 1 into which the valve shaft fixing member 16 is pressed is formed on the upstream side more than the valve seat face 18 of the downstream side opening 8 of the valve box 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は流体の流れ方向に対して直交する弁軸を介して弁箱に揺動自在に支持されたフラップ形弁体により、流体の上流側から下流側への順方向の流れは許容するが、その逆方向すなわち下流側から上流側への流れは阻止する逆止弁に関する。   The present invention allows the forward flow from the upstream side to the downstream side of the fluid by the flap-type valve body that is swingably supported by the valve box via the valve shaft orthogonal to the fluid flow direction. The present invention relates to a check valve that prevents the flow in the reverse direction, that is, from the downstream side to the upstream side.

従来の逆止弁は、弁箱の下流側の上部に設けられた軸受孔に、流体の流れ方向に対して直交する水平な弁軸が支持され、この弁軸に円板状のフラップ形弁体の上端部が揺動自在に取り付けられており、フラップ形弁体の揺動により、フラップ形弁体の弁面が弁箱の下流側開口の弁座面に対して離着座して弁箱の下流側開口を開閉するものである。   In a conventional check valve, a horizontal valve shaft orthogonal to the fluid flow direction is supported in a bearing hole provided in the upper part on the downstream side of the valve box, and a disc-shaped flap valve is supported on the valve shaft. The upper end of the body is swingably attached, and by swinging the flap-type valve body, the valve face of the flap-type valve body is separated from the valve seat surface of the downstream opening of the valve box, and the valve box It opens and closes the downstream side opening.

上記従来の逆止弁は、弁箱の軸受孔に支持される弁軸の中心軸からフラップ形弁体の弁面までの距離と弁軸の中心軸から弁箱の下流側開口の弁座面までの距離が異なると、フラップ形弁体が弁箱の下流側開口を完全閉止できない問題点があった。すなわち、中心軸から弁面までの距離に対して中心軸から弁座面までの距離が長いと、弁面の下部が弁座面の下部に当接したときに弁面の上部が弁座面の上部に当接できず、逆に中心軸から弁面までの距離に対して中心軸から弁座面までの距離が短いと、弁面の上部が弁座面の上部に当接したときに弁面の下部が弁座面の下部に当接できないためである。
実開平７−６５７０号公報 The above-mentioned conventional check valve includes the distance from the center axis of the valve shaft supported by the bearing hole of the valve box to the valve surface of the flap-type valve body, and the valve seat surface of the valve box on the downstream side of the valve box. If the distance to the valve is different, there is a problem that the flap type valve element cannot completely close the downstream opening of the valve box. That is, if the distance from the central axis to the valve seat surface is longer than the distance from the central axis to the valve surface, when the lower part of the valve surface comes into contact with the lower part of the valve seat surface, the upper part of the valve surface If the distance from the central axis to the valve seat surface is shorter than the distance from the central axis to the valve surface, the upper surface of the valve surface contacts the upper portion of the valve seat surface. This is because the lower part of the valve surface cannot contact the lower part of the valve seat surface.
Japanese Utility Model Publication No. 7-6570

解決しようとする課題は、弁軸の中心軸からフラップ形弁体の弁面までの距離と弁軸の中心軸から弁箱の下流側開口の弁座面までの距離を一致させることのできる逆止弁を提供することである。   The problem to be solved is that the distance from the central axis of the valve shaft to the valve surface of the flap-type valve body and the distance from the central axis of the valve shaft to the valve seat surface of the downstream opening of the valve box can be matched. Is to provide a stop valve.

本発明は、弁箱の下流側の上部に、流体の流れ方向に対して直交する水平な弁軸が支持され、この弁軸に円板状のフラップ形弁体の上端部が揺動自在に取り付けられており、フラップ形弁体の揺動により、フラップ形弁体の弁面が弁箱の下流側開口の弁座面に対して離着座して弁箱の下流側開口を開閉するものにおいて、弁軸に取り付けられたフラップ形弁体と共に押下されることにより弁箱に圧入される弁軸固定部材が弁軸に取り付けられており、弁軸の中心軸からフラップ形弁体の押下面及び弁軸固定部材の押下面までの距離が同一に形成され、弁軸固定部材が圧入される弁箱の圧入先端面が弁箱の下流側開口の弁座面よりも上流側に形成されていることを特徴とする。   In the present invention, a horizontal valve shaft orthogonal to the fluid flow direction is supported at the upper part on the downstream side of the valve box, and the upper end portion of a disc-shaped flap-shaped valve body is swingable on the valve shaft. It is attached, and the valve face of the flap type valve element is separated from the valve seat surface of the downstream opening of the valve box and swings the flap type valve element to open and close the downstream opening of the valve box. A valve shaft fixing member that is press-fitted into the valve box when pressed together with the flap-type valve body attached to the valve shaft is attached to the valve shaft, and the pressing surface of the flap-type valve body from the central axis of the valve shaft and The distance to the pressing surface of the valve shaft fixing member is the same, and the press-fitting tip surface of the valve box into which the valve shaft fixing member is press-fitted is formed upstream of the valve seat surface of the downstream opening of the valve box. It is characterized by that.

本発明は、弁軸の中心軸からフラップ形弁体の弁面までの距離と弁軸の中心軸から弁箱の下流側開口の弁座面までの距離を一致させることができるので、フラップ形弁体が弁箱の下流側開口を完全閉止できるという優れた効果を生じる。   In the present invention, the distance from the central axis of the valve shaft to the valve surface of the flap-type valve element can be matched with the distance from the central axis of the valve shaft to the valve seat surface of the downstream opening of the valve box. An excellent effect that the valve body can completely close the downstream opening of the valve box is produced.

本発明は、弁軸の中心軸からフラップ形弁体の押下面及び弁軸固定部材の押下面までの距離が同一に形成されていると共に、弁軸固定部材が圧入される弁箱の圧入先端面が弁箱の下流側開口の弁座面よりも上流側に形成されており、弁軸に取り付けられているフラップ形弁体及び弁軸固定部材が圧入ジグで押下されることにより弁軸固定部材が弁箱に圧入されるものである。そのため、弁軸に取り付けられているフラップ形弁体及び弁軸固定部材はフラップ形弁体の弁面が弁箱の下流側開口の弁座面に当接する位置まで押下されて、弁軸固定部材が弁箱に圧入される。そのため、弁軸の中心軸からフラップ形弁体の弁面までの距離と弁軸の中心軸から弁箱の下流側開口の弁座面までの距離を一致させることができる。   In the present invention, the distance from the central axis of the valve shaft to the pressing surface of the flap type valve element and the pressing surface of the valve shaft fixing member is the same, and the press-fitting tip of the valve box into which the valve shaft fixing member is press-fitted The surface is formed on the upstream side of the valve seat surface of the downstream opening of the valve box, and the valve stem is fixed by pressing the flap-type valve element and valve stem fixing member attached to the valve stem with a press-fitting jig. The member is pressed into the valve box. Therefore, the flap type valve element and the valve axis fixing member attached to the valve axis are pushed down to the position where the valve surface of the flap type valve element abuts the valve seat surface of the downstream opening of the valve box. Is pressed into the valve box. Therefore, the distance from the central axis of the valve shaft to the valve surface of the flap-type valve element can be matched with the distance from the central axis of the valve shaft to the valve seat surface of the downstream opening of the valve box.

図１は本発明の逆止弁の実施例を示す断面図、図２は図１のＡ−Ａ断面図、図３は図１の弁軸に取り付けられている弁軸固定部材をフラップ形弁体と共に弁箱に圧入する状態を示す参考断面図、図４は弁軸の中心軸からの距離を示す参考断面図である。弁箱１に弁ケース２が図示しないネジにより固定されて弁ケーシングが形成されている。弁箱１のフランジ部と弁ケース２のフランジ部の間には両者の気密を保つガスケット３が介在されている。弁ケース２には上流側から連通する流入口４と、下流側に連通する流出口５と、流入口４と流出口５を連通する弁箱収容室６が形成されている。弁箱１には流入口４から連通する４つの上流側開口７と、流出口５に連通する下流側開口８と、上流側開口７と下流側開口８を連通する連通路９が形成されている。弁箱１の下流側の外周に弁ケース２の内周との間の気密を保つＯリング１０が介在されている。   1 is a cross-sectional view showing an embodiment of a check valve according to the present invention, FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, and FIG. 3 is a flap-type valve as a valve shaft fixing member attached to the valve shaft of FIG. FIG. 4 is a reference sectional view showing a distance from the central axis of the valve shaft. A valve casing 2 is fixed to the valve box 1 by screws (not shown) to form a valve casing. Between the flange portion of the valve box 1 and the flange portion of the valve case 2, a gasket 3 is interposed to keep both airtight. The valve case 2 is formed with an inlet 4 that communicates from the upstream side, an outlet 5 that communicates with the downstream side, and a valve box housing chamber 6 that communicates the inlet 4 and the outlet 5. The valve box 1 is formed with four upstream openings 7 communicating from the inlet 4, a downstream opening 8 communicating with the outlet 5, and a communication passage 9 communicating the upstream opening 7 and the downstream opening 8. Yes. An O-ring 10 that maintains airtightness between the inner periphery of the valve case 2 is interposed on the outer periphery on the downstream side of the valve box 1.

弁箱１の下流側の上部に流体Ｑの矢印で示す流れ方向に対して直交する水平な弁軸１１が支持され、弁軸１１に円板状のフラップ形弁体１２の上端部１３が揺動自在に取り付けられている。圧入ジグ１４によりフラップ形弁体１２と共に押下され弁箱１の圧入穴１５に圧入される弁軸固定部材１６が、フラップ形弁体１２の上端部１３の両側で弁軸１１に取り付けられている。フラップ形弁体１２の揺動により、フラップ形弁体１２の弁面１７が弁箱１の下流側開口８の弁座面１８に対して離着座して弁箱１の下流側開口８を開閉する。   A horizontal valve shaft 11 that is orthogonal to the flow direction indicated by the arrow of the fluid Q is supported at the upper part on the downstream side of the valve box 1, and the upper end portion 13 of the disc-shaped flap-shaped valve body 12 is shaken by the valve shaft 11. It is attached movably. A valve shaft fixing member 16 that is pressed down together with the flap-type valve body 12 by a press-fit jig 14 and press-fitted into the press-fit hole 15 of the valve box 1 is attached to the valve shaft 11 on both sides of the upper end portion 13 of the flap-type valve body 12. . By swinging the flap valve body 12, the valve surface 17 of the flap valve body 12 is separated from the valve seat surface 18 of the downstream opening 8 of the valve box 1 to open and close the downstream opening 8 of the valve box 1. To do.

弁軸１１の中心軸１９からフラップ形弁体１２の押下面２０までの距離Ｂと弁軸１１の中心軸１９から弁軸固定部材１６の押下面２１までの距離Ｃは同一に形成されている。また、弁軸固定部材１６が圧入される弁箱１の圧入先端面２２が弁箱１の下流側開口８の弁座面１８よりも上流側に形成されている。   The distance B from the central axis 19 of the valve shaft 11 to the pressing surface 20 of the flap-shaped valve body 12 is the same as the distance C from the central axis 19 of the valve shaft 11 to the pressing surface 21 of the valve shaft fixing member 16. . In addition, a press-fitting tip surface 22 of the valve box 1 into which the valve shaft fixing member 16 is press-fitted is formed upstream of the valve seat surface 18 of the downstream opening 8 of the valve box 1.

流入口４側の流体圧力が流出口５側よりも高ければ、フラップ形弁体１２は弁軸１１を中心に時計周り方向に揺動し、弁面１７が弁座面１８から離座して下流側開口８を開放する。これにより、流入口４の流体が上流側開口７から下流側開口８を通って流出口５に流れる。   If the fluid pressure on the inflow port 4 side is higher than that on the outflow port 5 side, the flap valve body 12 swings clockwise around the valve shaft 11, and the valve surface 17 is separated from the valve seat surface 18. The downstream opening 8 is opened. As a result, the fluid at the inlet 4 flows from the upstream opening 7 to the outlet 5 through the downstream opening 8.

流出口５側の流体圧力が流入口４側よりも高くなれば、フラップ形弁体１２は弁軸１１を中心に反時計周り方向に揺動し、弁面１７が弁座面１８に着座して下流側開口８を閉止する。これにより、流出口５から流入口４への逆流を防止する。   If the fluid pressure on the outlet 5 side becomes higher than that on the inlet 4 side, the flap-type valve element 12 swings counterclockwise about the valve shaft 11, and the valve surface 17 is seated on the valve seat surface 18. Then, the downstream opening 8 is closed. Thereby, the backflow from the outflow port 5 to the inflow port 4 is prevented.

本発明の逆止弁の実施例を示す断面図。Sectional drawing which shows the Example of the non-return valve of this invention. 図１のＡ−Ａ断面図。AA sectional drawing of FIG. 図１の弁軸に取り付けられている弁軸固定部材をフラップ形弁体と共に弁箱に圧入する状態を示す参考断面図。FIG. 2 is a reference cross-sectional view showing a state in which a valve shaft fixing member attached to the valve shaft of FIG. 弁軸の中心軸からの距離を示す参考断面図。The reference sectional view showing the distance from the central axis of the valve shaft.

符号の説明Explanation of symbols

１ 弁箱
８ 弁箱の下流側開口
１１ 弁軸
１２ フラップ形弁体
１３ フラップ形弁体の上端部
１６ 弁軸固定部材
１７ フラップ形弁体の弁面
１８ 弁箱の下流側開口の弁座面
１９ 弁軸の中心軸
２０ フラップ形弁体の押下面
２１ 弁軸固定部材の押下面
２２ 弁箱の圧入先端面
DESCRIPTION OF SYMBOLS 1 Valve box 8 Downstream side opening of valve box 11 Valve shaft 12 Flap type valve body 13 Upper end part 16 of flap type valve body Valve shaft fixing member 17 Valve surface 18 of flap type valve body Valve seat surface of downstream side opening of valve box 19 Central axis of valve shaft 20 Pressing surface 21 of flap-type valve body Pressing surface 22 of valve shaft fixing member 22 Press-fit front end surface of valve box

Claims (1)

弁箱の下流側の上部に流体の流れ方向に対して直交する水平な弁軸が支持され、この弁軸に円板状のフラップ形弁体の上端部が揺動自在に取り付けられており、フラップ形弁体の揺動により、フラップ形弁体の弁面が弁箱の下流側開口の弁座面に対して離着座して弁箱の下流側開口を開閉するものにおいて、フラップ形弁体と共に押下されることにより弁箱に圧入される弁軸固定部材が弁軸に取り付けられており、弁軸の中心軸からフラップ形弁体の押下面及び弁軸固定部材の押下面までの距離が同一に形成され、弁軸固定部材が圧入される弁箱の圧入先端面が弁箱の下流側開口の弁座面よりも上流側に形成されていることを特徴とする逆止弁。
A horizontal valve shaft orthogonal to the fluid flow direction is supported at the upper part on the downstream side of the valve box, and the upper end of a disc-shaped flap-shaped valve body is swingably attached to this valve shaft. The flap type valve element opens and closes the downstream side opening of the valve box by swinging the flap type valve element so that the valve surface of the flap type valve element is separated from the valve seat surface of the downstream side opening of the valve box. A valve shaft fixing member that is pressed into the valve box by being pressed together is attached to the valve shaft, and the distance from the central axis of the valve shaft to the pressing surface of the flap-type valve body and the pressing surface of the valve shaft fixing member is A non-return valve characterized in that the press-fitting tip surface of the valve box into which the valve shaft fixing member is press-fitted is formed upstream of the valve seat surface of the downstream opening of the valve box.
JP2007092533A 2007-03-30 2007-03-30 Check valve Active JP4833133B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007092533A JP4833133B2 (en) 2007-03-30 2007-03-30 Check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007092533A JP4833133B2 (en) 2007-03-30 2007-03-30 Check valve

Publications (2)

Publication Number Publication Date
JP2008249056A true JP2008249056A (en) 2008-10-16
JP4833133B2 JP4833133B2 (en) 2011-12-07

Family

ID=39974231

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007092533A Active JP4833133B2 (en) 2007-03-30 2007-03-30 Check valve

Country Status (1)

Country Link
JP (1) JP4833133B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015136565A (en) * 2014-01-24 2015-07-30 Smc株式会社 oxygen concentrator
JP2015150209A (en) * 2014-02-14 2015-08-24 Smc株式会社 oxygen concentrator
CN109519143A (en) * 2019-01-15 2019-03-26 陈超 Four flashboard coiled tubing blowout preventers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5014177Y1 (en) * 1968-10-19 1975-05-02
JPS6071770A (en) * 1983-09-22 1985-04-23 大日本インキ化学工業株式会社 Anti-staining agent for thermoplastic synthetic fiber
JP2005048652A (en) * 2003-07-28 2005-02-24 Mitsubishi Electric Corp Exhaust check valve for automobile vacuum pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5014177Y1 (en) * 1968-10-19 1975-05-02
JPS6071770A (en) * 1983-09-22 1985-04-23 大日本インキ化学工業株式会社 Anti-staining agent for thermoplastic synthetic fiber
JP2005048652A (en) * 2003-07-28 2005-02-24 Mitsubishi Electric Corp Exhaust check valve for automobile vacuum pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015136565A (en) * 2014-01-24 2015-07-30 Smc株式会社 oxygen concentrator
JP2015150209A (en) * 2014-02-14 2015-08-24 Smc株式会社 oxygen concentrator
CN109519143A (en) * 2019-01-15 2019-03-26 陈超 Four flashboard coiled tubing blowout preventers
CN109519143B (en) * 2019-01-15 2021-06-04 大庆丹枫石油技术开发有限公司 Four-flashboard continuous oil pipe blowout preventer

Also Published As

Publication number Publication date
JP4833133B2 (en) 2011-12-07

Similar Documents

Publication Publication Date Title
US10215089B2 (en) Variable-flow-rate valve mechanism and turbocharger
JP2004003665A (en) Check valve
MY154544A (en) Valve
MX2007012911A (en) Fluid flow control valve with composition seal.
ATE480731T1 (en) VALVE ARRANGEMENT
JP4833133B2 (en) Check valve
HK1122349A1 (en) Ball valve
JP5583234B2 (en) Flow control valve
JP4428501B2 (en) Check valve
DE60216063D1 (en) Gate valves
DK2195566T3 (en) ball valve isolator
JP2008175166A (en) Check valve for compressor
JP2010266032A (en) Check valve
JP2018520311A (en) Valve with non-circular occlusion member
ATE292767T1 (en) BUILT-IN VALVE FOR A SECTIONAL RADIATOR
JP2009091947A5 (en)
JP5203023B2 (en) Check valve
JP2008095893A (en) Check valve
NO20071827L (en) Ball valve and valve seat
JP3116094U (en) Check valve
JP6090069B2 (en) Fuel injection valve
JP2003240133A5 (en)
JP2006300118A (en) Swing type check valve
JP2011069235A5 (en)
JP2014234866A (en) Check valve

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20100122

TRDD Decision of grant or rejection written
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110914

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110920

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110921

R150 Certificate of patent or registration of utility model

Ref document number: 4833133

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140930

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250